Ventilator



wie. FO'RCIER.

YENTILATOR. APPLICATION FILED JAN.20,1920- 2 SHEETSSHEET I.

Patented Apr. 5, 1921;

W. G.-FORC|ER.

VENTILATOR.

I APPLICATION FILED JAN. 20' I920. 1,373,960., Patented Apr. 5

, 0 km E. W. M it lrnli'rr Wm WW e1 1e W W J a building.

UNITED STATES PATENT OFFICE.

WILLIAM G. FORCIER, OF WOLLASTON, MASSACHUSETTS.

VENTILATOR.

Specification of Letters Patent.

Patented Apr. 5, 1921.

Original application filed July 31, 1919, Serial No. 314,405. Divided and this application filed January 20, 1920. Serial No. 352,868.

To all'whomit may concern:

Be it known that 1, WILLIAM G. Fonomu, a citizen of the United States, residing at Vollaston, in the county of Norfolk and State of Massachusetts, have invented certain new and useful Improvements in Ventilators, of which the following is a specification.

This invention relates to ventilating sys-.

tems, the present application being a diVlsion of an a plication filed by me July 31, 1919,-'Serial 0. 314,405.

In the accompanying drawings,

Figure 1 is a vertical section of a portion of a building showing the application of my present invention;

Fig. 2 is an enlarged longitudinal section of the ventilator embodying the present invention;

Fig. 3 is av detail perspective view of the operating mechanism;

' Fig. 4 is a. detail section on the line 4-4 of Fig. 2.

As shown in Fig. 1 of the drawings, the buildin in which my invention is embodied is of t e hollow-wall type, a cardboard sheathing 7 extending the entire height of the building and spacers, one of which is shown at 8, being secured over said sheathing at intervals and serving to hold thesame against the severalsills and girdersof the An outer sheathing 9 is secured to the outer sides of the spacers and this sheathing may have a material or style according to'the finish to be given the building. The roof 11 extends over the upper end of the space 12 between the inner and outer sheathing? but the lower end of said space is open alt ough it is covered with a screen 13 to prevent the entrance of insects. Spaced inwardly from the sheathing 7 is a partition 14, preferably of plaster, a dead-air space 15 being thus provided between the sheathing 7 and the partition or wall 14. Spaced from the partition facing of any desired fulcrumed in the wall 14 and operatively connected with the damper.

Wi-thin each room of the bpilding, I provlde an upper ventilator whlch is intended to admit fresh air to the room and a lower ventilator 'which is intended to permit the be covered with-felt or otherwise calked in the openings through the sheathing 7 and the walls 14" and 16 so that leakage ofair around the casings will not occur. The lower casing is located at'the floor of the room and extends through the base board 37 therein while the upper casing is located adjacent the ceiling and may be flush with the inner wall or provided with a flange fitting against the same. Within each case ing is a plurality of plates 38 which are'provided at their ends with trunnions or a shaft 39 journaled in the sides of the casing. If the member 39 be extended throu h the plates, it will be pinned thereto, as in icated in Fig. 2. The pivot 39 of each plate will, of course, be disposed at the vertical center thereof and within the casing, adjacent each plate, are opposite sides of the vertical planes of the respective plates so as to limit the movement thereof and they may be faced withfelt or other material so that a draft-proof 'oint with the plates will be effected as will e readily understood. The outer stops 40 terminate above the pivot pins of the respective plates, while the inner stops terminatebelow said points, as clearly shown in Fig. 2, and free movement of the plates is thus permitted. Upon one end of the pivot for each plate is secured an arm 41 and the arms of the several plates are connected by a link 42 so as to effect simultaneous move- 'ment of the plates. One of the arms 41 is equipped with a pin 43 which plays in a slot 44 in a tongue 45 depending from a sleeve 46 which is internally threaded and mounted upon a threaded rod or worm shaft p and the said scribed herein ligh and inasmuch as 47 which is swiveled at its outer end in a bracket 48 and equipped at its inner end with a hand wheel 48 is secured rigidly to a partition 50 disposed longitudinally of the casing 36 and separating the operating mechanism from the ventilator plates. The space between the partition and the casing at the inner ends thereof is sealed which also provides the inner bearing for the worm shaft 47. The handle 49 at the lower ventilator will be in the form of a hand wheel, as shown, which may be easily grasped and manipulated but at the upper ventilator I substitute for the hand wheel a grooved pulley or disk 52 to which is secured a cable or chain 53 having its ends depending from the said disk or pulley at opposite sides thereof'and equipped With grips 54. The cable 53 will depend from the pulley to such point that its ends may be easily reached by an occupant of the room and the ventilator, therefore, easily adjusted. The outer end of the upper casing '36 is covered by a screen 55 and a hood 56 is secured to the outer side of the building to extend over said screen and protect the same and the casing from the weather.

It will be noted that the lower ventilator opens into-the space 12 which is open atits lower end to the atmosphere but the upper ventilator extends through said space and through the outer sheathing so that said upper ventilator is directly open to the atmosphere. Therefore, if the lower ventilator be opened the foul air contained in a room will escape but there will be no great rush of outside air into the room, so that the foul air may be discharged without any substantial lowering of the temperature of the room If the upper Ventilator be opened atmospheric air will be admitted to the room so that 'the necessary supply ofyfresh air and oxygen may be easily obtained and if both ventilators be opened a circulation of air through the upper ventilator into the room and thence out through the lower ventilator will be created inasmuch as the upper ventllator is open to the outside air and furnishes direct access of the same to the room, while the lower ventilatorcommunicates only indirectly with the outside air and it, therefore, counteracts the usual tendency of air to How upwardly. Moreover, the upper end of the air space 12 is normally closed space is normally a dead-air space in which there is no circulation. By employing the construction shown and det materials may be employed and buildings quickly erected so that the cost of construction will beminimized a plurality of dead-air or pulley 49. The bracketby a cover plate 51 tical plane,

' ended casing, in the casing arms thereon, a sleeve fitted spaces are provided around the building the temperature of the same is more nearly uniform than with other known constructions and the cost of heating the building in cold weather will be very considerably reduced. A very efficient system of ventilation is provided which may be easily controlled by the occupant of the building without disarranging or rendering inoperative any of the parts.

Having thus described the invention, what is claimed as new is:

1. A ventilator for buildings comprising an open-ended casina plate mounted within the casing for roc ing' movement in a vera radial arm at one end of the plate, a worm disposed above said arm and held against longitudinal movement, a sleeve mounted uponsaid worm and having a depending tongue provided with a vertical slot, and a pin inserted through said radial arm and playing in the slot in said tongue.

2. A ventilator for buildings comprising an open-ended casing adapted to establish communication between the interior and ex terior of abuilding, a plurality of plates mounted for rocking movement within the casing and adapted when upright to cutoff flow through the casing, stops at opposite sides of the lates to limit the movement thereof and f drm seals around their edges,

each plate having its pivot at one end eX-' .'tended-,' radial arms on and ba d against longitudinal movement, and a sleeve mounted on said worm and provided 'wlth a tongue having a pin andslot connection wlth the radial arm on one extended pivot.

3. A ventilator comprising an opena longitudinal partition withnear one side thereof, plates pivoted at their vertical centers in the said partition and in the side wall of the casing more remote from the partition, the pivots of the several plates being extended beyond the partition, radial arms fixed on the extended pivots of the plates, a link connecting all said arms and extending longitudinally in the space between the partition and the adjacent side Wall of the casing, a worm shaft disposed longitudinally of the said space above the several pivots and the radial upon said worm shaft and provided with a depending tongue having a vertical slot therein, a pin inserted through one of the radial arms and playing 

